running multiple bots with one script

I tried running about 14 bots with one script and make them join voice channels and tried using worker threads to run each bot on a separate thread and distribute the bots and balance them on multiple cpu cores but but after a while of launching the script some of those bots go offline idk if the cpu can't handle running all of those bots simultaneously or it's just an internet problem can anyone help me understand the problem? Or at least suggest some methods to debug the problem